/**
 * Copyright 2009-2010 reward4j.org
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package org.reward4j;

/**
 * {@code RestrictionDecider} implementations decide on base of some
 * {@link user}'s account balance.
 *
 * @author hillger.t
 * @author Peter Kehren <mailto:kehren@eyeslide.de>
 */
public interface RestrictionDecider {

  /**
   * Some decision results in a boolean value.
   *
   * @param userBalance
   *          the user's balance
   * @param requestedValue
   *          the reference value for validating
   * @return boolean
   */
  boolean decide(double userBalance, double requestedValue);
}
